/Engine/Source/Editor/CurveEditor/Public/Tree/CurveEditorTree.h
Remove an item and all its children from this tree, destroying any curves it may have created.
void RemoveItem ( [FCurveEditorTreeItemID](API\Editor\CurveEditor\FCurveEditorTreeItemID) ItemID, [FCurveEditor](API\Editor\CurveEditor\FCurveEditor) * CurveEditor )